#include <stdio.h>
#include <math.h>

int main() {
	int wei, hei;
	double bmi;
	while (scanf("%d %d", &wei, &hei) != EOF) {
		bmi = wei / pow((double)hei * 1.0 / 100, 2);
		if (bmi < 18.5) {
			printf("Underweight\n");
		} else if (bmi >= 18.5 && bmi <= 23.9) {
			printf("Normal\n");
		} else if (bmi > 23.9 && bmi <= 27.9) {
			printf("Overweight\n");
		} else {
			printf("Obese\n");
		}
	}
	return 0;
}